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Appendix
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PT-970 A/B Series Reference Manual
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6.
Life of M.2
1.
About Write Endurance
M.2 contained in product has a write endurance which limits the number of times each memory may
be written, due to the characteristic of the memory that is used. Write endurance can be calculated
by the following formula as a reference value:
Write endurance (years) =
Total capacity (cycles) / (The number of yearly consumed blocks / The total number of blocks)
Example :
When the file of 4MB is made, and it rewrites it once per 10 seconds.
The number of yearly consumed blocks =1 × ((60 / 10) × 60 × 24 × 365) = 3,153,600 (blocks)
Life = 3,000 / (3,153,600 / 8000) ≈ 7.6 (years)
The life endurance is reference values under a certain condition. For the actual life, install the
dedicated software (*) and write with the estimated actual operation, and check the SMART value.
2.
About S.M.A.R.T.
Life endurance can be estimated by installing the self-diagnosis program that can obtain the
S.M.A.R.T. information of SSD.
* Ask your retailer for details.
